Electrical selector



(No Mbdel 2 Sheets-Sheet 1.,

S. S. B'0GART..

ELEGTRIOAL'SELEGTOR.

No. 563,443. Patented July 7, 1 896.

ATTORNEY)? (No Model.) sheets-sheet 2.

' S. C. BOGART.

ELECTRICAL SELECTOR.

No. 563,443. Patented July 7, 1896.

WITNESSES ATTCRN EYf UNITED STATES PATENT OFFICE.

SAMUEL S. BOGART, OF SCHRAALENBURG, NEW JERSEY, ASSIGNOR TO THE ELECTRICSELECTOR AND SIGNAL COMPANY, OF WEST VIRGINIA.

ELECTRICAL SELECTOR.

SPECIFICATION formingpart of Letters Patent No. 563,443, dated July '7,1896. Application filed January 5, 1895. Serial No. 533,908. No'm deh)To all whom it may concern.-

Be it known that I, SAMUEL S. BOGART, of Schraalenburg, Bergen county,New Jersey, have invented a new and useful Improvement in ElectricalSelectors, of which the following is a full description.

The accompanying drawings illustrate the invention, of which- Figure 1is a side elevation of the device with a portion of side wall removed;Fig. 2, anelevation of the opposite side of Fig. 1, with upper part ofside wall removed. Fig. 3 is a front elevation of the device; Fig. 4, aplan view of the front part of the instrument. Fig. 5 is aview of thebrushes and the selector crank and pin which controls them. Figs. 6 and7 are enlarged perspective views of the combination and spacing wheelsand their operating mechanisms, showing dilferent positions of theparts.

Upon a suitable base, as A, are erected the standards or side plates B,which constitute the frame and support the mechanisms of the apparatus.J ournaled in the frame is the shaft b, which carries the wheels 1, 2,and 3. (See Figs. 6 and 7.) 1 may be called the combination-wheel, asits teeth are cut thereon in members, separated by a raised space, and

form a mechanical representation ofa predetermined arrangement or fixedcombination of electrical impulses received from a suitable transmitter.2 may be called the spacingwheel, as its periphery is cut and arrangedto represent spaces between its members which correspond with the teethof the combinationwheel, that is to say, where the teeth occur on one ofthe wheels a raised space is placed upon the other, and both have araised space in common at the end of each member of the combination.They are both rigidly secured to the shaft and are operated by a singlemagnet in the manner hereinafter described. 3 is a ratchet-wheel, alsosecured to the same shaft, and is provided with the check-pawl b whichdrops into one of the teeth ateach impulse and retains the shaft untilit is thrown out by the operation of the devices. This wheel maytherefore be called the check wheel. The wheels are impelled or thrustforward at each impulse against the tension of a coiled spring locatedwithin the drum 6 on device, represented by the wheel D and the anchord. The'wheel is suitably mounted on a shaft properly journaled in theframe. On the same shaft is placed a pinion 61 which meshes with apivoted rack d Upon the arm of this rack there is a pin (1 which entersand plays in a slot 0 in the free end of the arm 0 The other end of thisarm is pivoted to the armature-lever c, as shown, so that the promptmovement of the parts is unaffected by the retarding device pending thelost motion of the slot and pin, but it is brought into action wheneither end of the slot contacts with the pin/ The impelling-pawls c eare pivoted to the end of the armature-lever and act upon thecombination and spacing wheels 1 and 2. (See Figs. 6 and 7.) They arearranged with a spring which exerts its tension to retain the pawl incontact with the periphery of the wheels. As the wheels are impelled andturn the shaft 12', it is checked and held by the checking-pawl b actingupon the checkwheel 3, and I have provided means for throwing out thispawl when a false impulse is transmitted or when the impulses cease,

and when this checking-pawl is thrown out y the coiled spring in thedrum 6 will return the selector to zero or starting-point. IVithin aslot on the post F is pivoted the head-piece f, at f, whose spring fretains the headpiece inwardly until thrown out. This headpiece carriesthe bar f and the bar carries the projections f f'. The upper arm of thehead-piece is provided with the pin f", which carries the cross-bar f,wh ich projects behind the pawls 6 6 and are so arranged with eachother that when the pawl e is dropped into a notch on the wheel 1 anddescends with the armature-lever both pawls e e will pass inside theprojections f f; but when that pawl is riding upon a raised space on thewheel,

which occurs when a false impulse is transmitted, it will strike theprojection f 5 when it descends, as shown in Fig. 7, throwing out thehead f and cross-bar f which in turn throws out both pawls e and 6 Thismovement also throws out the pawl b from the check-wheel 3 and allowsthe selector to be returned to normalposition. Projecting from thehead-piece f is a pin f and from the shaft 12*, which carries the pawl bthere is an arm Z1 which lies in the path of the pin f and as thehead-piece is thrown out when the false impulse occurs the pawl 12 islifted and the wheel 3 released. The wheel 1 is cut to represent apredetermined arrangement of impulses, for example, 4c 2 1 3 2, and eachof these requires a corresponding arrangement of impulses from thetransmitter and may be called the members of the combination. Betweeneach member and the next adjoining one there is a raised space on thewheel, which represents a distance of two impulses, if such were given,and then the next member of the combination begins, followed by theraised space. On the wheel 2 the spaces occur where the teeth are placedon No. 1, with an increase to represent the two im-. pulses of space onthe wheel 1, and teeth where the spaces occur on No. 1. The wheel 2 is alittle smaller in diameter than the wheel 1, so that its pawl maydescend upon one of its spaces and still pass inside of the projection1", and the two are arranged together, so that at the start from normalposition and at the beginning of each member of the combination both ofthe pawls are in a notchupon the respective wheels' The impulses fromthe transmitter must be given to correspond with the wheels, and vary inthe amount of pause between the impulses, and in, these pauses thearmature-lever goes back difierent distances, according tothe durationof the pauses, as will be illustrated by taking the first member of thecombination, which is 4, or four impulses.

At the startingpoint both pawls are in a notch. succession withsu'fficient rapidity to allow the pawl of wheel 1 to. return and enterthe notch behind, but not farther, and descend again, until the fourimpulses are given. Both pawls pass within the projections f f. Pawl eescapes f because it is within its notch, and pawl 6 though riding on aspace, escapes the projection f because of the smaller diameter of itswheel. W" hen these four impulses are completed, a pause occurs in theimpulses sufficient to allow thearmature lever to go back a distance oftwo notches and thus pass over the space between the members. theirnotches and descend together, propelling the wheels. Two impulses aregiven,

then a pause sufiicient to pass the-pawls over the space between themembers, and so on. Now it will be seen that if this pause is too shortand the pawl descends before its time,

The armaturedescends four times in;

At this point both pawls are in.

6 will descend upon the raised space on the wheel and throw out the'check-pawl b releasing the wheel 3, which allows the selector to bereturned to zero. Again, if five impulses are given instead of four thesame thing occurs, or if the pause is too long the pawl 6 will rest uponthe second or third notch of the next member of the combination, so thatwhen the impulses are given to suit the combination the same thing willoccur, or else if the armature be allowed to return too far it will ofitself release the check-wheel in the manner I will now describe.

The rack d is provided with a sleeve (1 by which it is journaled on itsshaft, and on this sleeve and moving with the rack is the arm cl, whosepath is beneath the extended arm of pawl b lVhen the armaturedever isdown and engaged in propelling the wheels, the arm does not strike thepawls; but if the arm is allowed to go back too far, either by allowinga pause of too long duration between the impulses or when the impulsescease, the re- 1 turn of the armature-lever causes the arm to lift thecheck-pawl and return the selector to zero. In this way also the partsare restored to normal when theselector has completed its phase. Whenthe selector has completed its phase, a crank-pin b" on the shaft bcloses the brushes h h to control a circuit to pen form such work as.is. common and usual with 1 these devices, which need not be furtherdescribed.

What I claim, and desire to secure by Letters Patent, is-

able deviceactuated by the armature of an electromagnet to the end ofits phase in re I sponse to impulses from a transmitter, means 1 forretarding the backward throw of the armature between the impulsesthereby pre- T venting it from completing its backwardthrow and meansfor returning the selector to zeroactuated by the same armature incompleting its backward throw when the actuat ing impulses cease.

2. In an electricselecting instrument a movable device actuated by anelectromagnetre 3 spending to electrical impulses transmitted throughits coils, an armature-lever haVi-nga downward movement of given.distance from starting-point andtwobackward movements both within saidgiven distance forworking out the combination of the selector, one ofsaid backward movementstoreturn and catch 1 the next succeeding tooth ofthe wheel and 'the other to return and catch the next but i one of theteeth, said movements governed by duration of the pauses between theelectric impulses. 3. In an electric selecting instrument a movabledevice actuated by an electromagnet, re- {sponding to electricalimpulses transmitted through its coils, an armature-lever having adownward movement and three backward I movements for working out thecombination {and restoring the instrument to zero at the end of itsphase, said movements regulated by the duration of the pauses betweenthe impulses.

4. In an electric selecting instrument a movable device responding to afixed combination of electrical impulses transmitted through the coilsof an electromagnet; an armature-lever and mechanical connectionswhereby the phase of the selector is worked out, and means for restoringthe instrument to zero actuated by the forward throw of thearmature-lever and also by the backward throw of said lever.

5. In an electric selecting instrument a movable phase completing deviceactuated by an armature-lever responding to impulses I 5 through thecoils of its magnet to work out the combination, means for restoring theinstrument to zero actuated by a false impulse, and means for restoringto zero at the end of its phase, actuated by the armature-lever inreturning to starting-point.

Signed at New York city, in the county of New York and State of NewYork, this 15th day of December, A. D. 1894.

SAMUEL S. BOGAR'I.

- Witnesses:

WILLIAM SUTPHEN, M. TURNER.

